<template>
  <div class="container">
    <div class="app-container">
      <el-tree :expand-on-click-node="false" :data="depts" :props="defaultProps" default-expand-all>
        <el-row slot-scope="{ data }" style="width: 100%; height: 40px;" type="flex" align="middle">
          <el-col :span="20">{{ data.name }}</el-col>
          <el-col :span="4">
            <span class="tree-manager">{{ data.managerName }}</span>
            <el-dropdown @command="operateDept($event,data.id)">
              <!-- 显示区域内容 -->
              <span class="el-dropdown-link">
                操作<i class="el-icon-arrow-down el-icon--right" />
              </span>
              <!-- 下拉菜单选项 -->
              <el-dropdown-menu slot="dropdown">
                <el-dropdown-item command="add">添加子部门</el-dropdown-item>
                <el-dropdown-item command="edit">编辑部门</el-dropdown-item>
                <el-dropdown-item command="del">删除</el-dropdown-item>
              </el-dropdown-menu>
            </el-dropdown>
          </el-col>
        </el-row>
      </el-tree>
    </div>
    <!-- 放置弹层 -->
    <AddDept ref="addDept" :current-node-id="currentNodeId" :show-dialog.sync="showDialog" @updateDepartment="getDepartment" />
  </div>
</template>
<script>
import { getDepartment, delDepartment } from '@/api/department'
import { transListToTreeData } from '@/utils'
import AddDept from './components/add-dept.vue'
export default {
  name: 'Department',
  components: { AddDept },
  data() {
    return {
      currentNodeId: null,
      depts: [],
      defaultProps: {
        children: 'children',
        label: 'name'
      },
      showDialog: false
    }
  },
  created() {
    this.getDepartment()
  },
  methods: {
    async getDepartment() {
      const result = await getDepartment()
      this.depts = transListToTreeData(result, 0)
    },
    operateDept(type, id) {
      if (type === 'add') {
        // 添加子部门
        this.showDialog = true
        this.currentNodeId = id
      } else if (type === 'edit') {
        // 编辑部门场景
        this.showDialog = true
        this.currentNodeId = id // 记录id 要用它获取数据
        // 更新props- 异步动作
        // 直接调用了子组件的方法 同步的方法
        // 要在子组件获取数据
        // 父组件调用子组件的方法来获取数据
        this.$nextTick(() => {
          this.$refs.addDept.getDepartmentDetail() // this.$refs.addDept等同于子组件的this
        })
      } else {
        // 删除部门
        this.$confirm('您确认要删除该部门吗').then(async() => {
          await delDepartment(id)
          // 提示消息
          this.$message.success('删除部门成功')
          this.getDepartment()
        })
      }
    }
  }
}
</script>
<style scoped>
.app-container {
  padding: 30px 140px;
  font-size: 14px;
}
.tree-manager{
  width: 50px;
  display: inline-block;
  margin: 0 30px;
}
</style>
